The Northern Lights, or aurora borealis, are typically visible in the northern parts of the United States, especially in states like Alaska, and occasionally in places like Minnesota, North Dakota, and Montana. The best chances to see the Northern Lights in these regions usually occur during the winter months (generally from late September to early April) when nights are longer and the skies are darker.
However, solar activity also influences visibility. Periods of high solar activity can make the Northern Lights visible farther south than usual. For real-time updates and forecasts about aurora activity, you can follow resources like the NOAA Space Weather Prediction Center or look for aurora-specific apps and websites.
If you're planning to experience the Northern Lights, checking the forecasts closer to your intended travel dates will give you the best chance of witnessing this natural phenomenon.